Patent US3784727A successfully refreshed from Google Patents.
US3784727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper resistant, lockable enclosure apparatus for transformers and the like
Assignee: AB Chance Co
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Filing: 1972-09-01
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Granted: 1974-01-08
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Expires: 1992-09-01
Abstract
Abstract Enclosure apparatus has one member, such as the swingable access hood of an electrical transformer, which may be secured tightly against another member, such as the body of the transformer, and locked in that position without exposing the locking means to tampering. A closed overhang on one member has an inset receptacle which both conceals and protects a threaded fastener interconnecting the member, and a padlock, also removably disposed in the receptacle, blocks an access hole in the overhang for the fastener when the padlock is locked.
Inventors
- 👤 H Haubein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:13
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; Y; Y10; Y10S; Y10S70/00; Y10S70/57; Y10T; Y10T292/00; Y10T292/08; Y10T292/1099
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
111 words
Tamper-resistant, lockable apparatus comprising: a pair of members positionable adjacent one another in a locking relationship, one of said members having an overhang projecting outwardly beyond the other member when the members are in said relationship; means located behind said overhang for releasably holding said member in said relationship, said members at least substantially concealing said releasable means when the members are held thereby in said relationship and having means comprising a hole in said overhang providing limited access to said releasable means for manipulating the same; a locking device; and means supporting said device in disposition for blocking said limited access to said releasable means when the device is locked.
Claim 2
Dependent Claim
111 words
Tamper-resistant, lockable apparatus comprising: a pair of members positionable adjacent one another in a locking relationship, one of said members having an overhang projecting outwardly beyond the other member when the members are in said relationship; means located behind said overhang for releasably holding said member in said relationship, said members at least substantially concealing said releasable means when the members are held thereby in said relationship and having means comprising a hole in said overhang providing limited access to said releasable means for manipulating the same; a locking device; and means supporting said device in disposition for blocking said limited access to said releasable means when the device is locked.
Claim 3
Dependent Claim
20 words
Apparatus as claimed in claim 1, wherein said members substantially conceal said device when the members are in said relationship.
Claim 4
Dependent Claim
15 words
Apparatus as claimed in claim 1, wherein said locking device is located behind said overhang.
Claim 5
Dependent Claim
27 words
Apparatus as claimed in claim 3, wherein said access means comprises a hole in said overhang, said device being disposed between said hole and said releasable means.
Claim 6
Dependent Claim
22 words
Apparatus as claimed in claim 3, wherein is provided an access opening to said device between the overhang and said other member.
Claim 7
Dependent Claim
37 words
Apparatus as claimed in claim 1, wherein is provided a receptacle on one of said members between the same and the other of said members, said releasable means being located at least in part within said receptacle.
Claim 8
Dependent Claim
34 words
Apparatus as claimed in claim 6, wherein said supporting means includes a staple on said other member, said receptacle having staple-receiving hasp means for disposition of said device within said receptacle on said staple.
Claim 9
Dependent Claim
16 words
Apparatus as claimed in claim 7, wherein said receptacle is open for access to said device.
Claim 10
Dependent Claim
20 words
Apparatus as claimed in claim 7, wherein said access means comprises a hole through said one member into said receptacle.
Claim 11
Dependent Claim
23 words
Apparatus as claimed in claim 9, wherein said device comprises a padlock suspended from said staple between said releasable means and said hole.
Claim 12
Dependent Claim
45 words
Apparatus as claimed in claim 1, wherein one of said members is provided with a closed overhang projecting outwardly beyond the other of said members when the members are in said relationship, said overhang having an inset receptacle for said releasable means and said device.
Claim 13
Dependent Claim
24 words
Apparatus as claimed in claim 11, wherein said receptacle is provided with a wall, said releasable means interconnecting said wall and the other member.
Claim 14
Dependent Claim
30 words
Apparatus as claimed in claim 11, wherein said access means includes a hole in said overhang into the receptacle, said device being disposed between said hole and the releasable means.
Claim 15
Dependent Claim
31 words
Apparatus as claimed in claim 1, wherein one of said members comprises the swingable hood of an electrical transformer and the other of said members comprises the body of the transformer.
References Cited (Backward Citations)
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US3210456A
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US3315023A
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US3365535A
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US3514172A
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US3625031A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |